Update .gitignore
Switch JSON creation from StringBuffer to org.codehaus.jettison.JSONObject
refactoring

- added identifier to CheckResult
- added expanded query parameter to results resource to keep current GUI code working
- added more details to result messages of OWS services like service type, version, and url
- reviewed result list template
- removed HTML from SelfCheckResult.result because it is not rendered correct --> allow HTML in CheckResult.getResult() requires additional steps like sanitation
Refactoring: *Resources moved to resources package
Implement clear CheckResults resource: When the button is clicked, all check result are deleted and the page is reloaded

Fixes 52North/Supervisor#26
Merge pull request #38 from EHJ-52n/master

Merge with latest developments from EHJ-52n